topic Re: classify rasta in Data Management Questions

classify rasta

charlotteJunker — Sat, 31 Oct 2015 08:45:20 GMT

Hello,

I've got a satellite Picture and I've classified it:

Now I'd like to create a single layer for each class (kurz, mittel, lang). I've tried to use the raster calulator, but I don't know how to export the classes.

Thanks!!

Re: classify rasta

DanPatterson_Retired — Sat, 31 Oct 2015 09:10:16 GMT

in generic terms..

gridname equals class (mygrid = someclass)

then save the result as usual

Re: classify rasta

JayantaPoddar — Sat, 31 Oct 2015 10:53:24 GMT

Hello Charlotte,

Let's say the GridValue of kurz = 1, mittel = 2 and lang = 3

Then, in Raster Calculator,

For Kurz raster dataset,

("value" = 1)

For mittel raster dataset,

("value" = 2)

For lang raster dataset,

("value" = 3)

N.B.: The above expressions should be written in 3 different instances, NOT as a single expression.

Let us know if your requirement is different.

Re: classify rasta

DarrenWiens2 — Sat, 31 Oct 2015 19:52:36 GMT

Make sure you use == in Raster Calculator. For example, "YourRaster" == 1

Re: classify rasta

curtvprice — Mon, 02 Nov 2015 06:18:19 GMT

What are you going to do with the layers? This may help us give you a better answer.

Re: classify rasta

JoeBorgione — Mon, 23 Nov 2015 15:48:40 GMT

Here are a couple of different Rasta classifications I found with a google search: